A little more info for you to decide, or help others to explain the differences

57HX83

The Toshiba 57HX83 is a 57-inch, rear-projection television. Compared to other rear-projection TVs on the market, it is midpriced at around $2,400. Note that this product has a wide-screen (16:9) format.

Pros: This TV has two tuners, for watching multiple programs at one time. (Having more than one tuner comes in handy when you want to view more than one broadcast at a time, using PIP.) With built-in HDTV compatibility, this unit can display images that are significantly sharper and more realistic than regular television, as long as the source is high definition. (It can easily render standard-resolution digital TV broadcasts and also depict the full resolution of widescreen DVD video.)

The Toshiba 57HX93 is a 57-inch, rear-projection television. Compared to other rear-projection TVs on the market, it is midpriced at around $3,000. Note that this product has a wide-screen (16:9) format.

Pros: This TV has two tuners, for watching multiple programs at one time. (Having more than one tuner comes in handy when you want to view more than one broadcast at a time, using PIP.) With built-in HDTV compatibility, this unit can display images that are significantly sharper and more realistic than regular television, as long as the source is high definition. (It can easily render standard-resolution digital TV broadcasts and also depict the full resolution of widescreen DVD video.)

The Toshiba 57H93 is a 57-inch, rear-projection television. Compared to other rear-projection TVs on the market, it is relatively inexpensive at around $2,005. Note that this product has a wide-screen (16:9) format.

Pros: This TV has two tuners, for watching multiple programs at one time. (Having more than one tuner comes in handy when you want to view more than one broadcast at a time, using PIP.) With HDTV compatibility, this TV set can display images that are sharper and more realistic than analog television when connected to a high definition signal. In addition, this display supports 3:2 pull down, which reduces artifacts that can appear when motion pictures are moved to a digital format.

I have the toshiba 57hx 83. I did a lot of res-each on these TV's before I bought. The only difference that I can see between the HX83 and the HX93 (also the only difference between the H83 and the H93), is an integrated HD tuner. Picture this, two TV's, the H series and the HX series. Then add one in each that has a built in HD tuner.

Now the hard part. H series is called theaterwide- it is considered the step down model. You can get these anywhere TV's are sold: Best Buy, Sears, etc. The HX is called the Cinema series. The next step up. It is only available at certain stores around the country, (In my case the closest one was 150 miles away), or on the Internet.

Some difference's include, but not limited to, a different set of guns, a anti-glare screen, different colored plastics, and the most important one to me, an IR emitter. What that does is takes any infra-red signal that hits the screen(yes, the screen is the infra-red sensor) and kicks it out an output in the back of the TV to run all of you HT gear behind closed doors, around a corner where ever you want to put your stuff. As long as the 10' long cables that are included will let you reach.

If you need to know all of the details, check out their web site and compare the regular TV's (theater-wide) to the cinema series.

Thanks Henning, I had heard the same. I did not know you were sure. sorry. I was also curious to know if anything else had been changed and to confirm then that indeed the 51HX83 has a better picture than 51HX84.